4065681964801 has 4 divisors (see below), whose sum is σ = 4065926445504. Its totient is φ = 4065437484100.

The previous prime is 4065681964789. The next prime is 4065681964819. The reversal of 4065681964801 is 1084691865604.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4065681964801 - 2⁴¹ = 1866658709249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4065681964891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122215405 + ... + 122248666.

It is an arithmetic number, because the mean of its divisors is an integer number (1016481611376).

Almost surely, 2^{4065681964801} is an apocalyptic number.

It is an amenable number.

4065681964801 is a deficient number, since it is larger than the sum of its proper divisors (244480703).

4065681964801 is a wasteful number, since it uses less digits than its factorization.

4065681964801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244480702.

The product of its (nonzero) digits is 9953280, while the sum is 58.

The spelling of 4065681964801 in words is "four trillion, sixty-five billion, six hundred eighty-one million, nine hundred sixty-four thousand, eight hundred one".